UC Berkeley
Latest
Researchers create nanotube memory that can store data for a billion years
Researchers at the Department of Energy's Lawrence Berkeley National Laboratory and UC Berkeley have developed an ultra-dense memory chip that is capable of storing data for up to a billion years (besting silicon chips by roughly... a billion years). Consisting of a crystalline iron nanoparticle shuttle encased within a multiwalled carbon nanotube, the device can be written to and read from using conventional voltages already available in digital electronics today. The research was led by Alex Zettl, who notes that current digital storage methods are capable of storing mass amounts of data, but last just decades, while, say, some books have managed to last nearly a thousand years, though the amount of data they contain is quite small. The new method, called shuttle memory, is based on the iron nanoparticle which can move back and forth within the hollow nanotu. Zettl believes that, while shuttle memory is years away from practical application, it could have a lot of archival applications in the future. There's a video after the break, hit the read link for more tiny details.[Via The Register]
Quest for invisibility cloaks revisited by two research groups
After a brief period of no news, it's time to revisit the world of invisible cloaks. Inspired by the ideas of theoretical physicist John Pendry at Imperial College, London, two separate groups of researchers from Cornell University and UC Berkeley claim to have prototyped their own cloaking devices. Both work essentially the same way: the object is hidden by mirrors that look entirely flat thanks to tiny silicon nanopillars that steer reflected light in such a way to create the illusion. It gets a bit technical, sure, but hopefully from at least one of these projects we'll get a video presentation that's sure to make us downright giddy.
Cyborg beetles commandeered for test flight, laser beams not (yet) included
Remember that DARPA initiative from a few years back to create cyborg insects? With funding from the agency, researchers at the University of California, Berkeley have managed to control a rhinoceros beetle via radio signals, demonstrated in a flight test shown on video at this week's IEEE MEMS 2009 conference. A module placed on the arthropod uses six electrodes affixed to the brain and muscles to commandeer its free will. The device weighs 1.3g -- much less than the 3g payload these guys can handle, and with enough wiggle room to attach sensors for surveillance. Ultimately, scientists say they want to use the beetle's own sensors -- namely, its eyes -- to capture intel and its own body energy to power the apparatus. Keep an eye on this one, we expect it to play a major role in the impending robots vs. humans war.[Thanks, Mimosa]
Mobile Millennium project promises to track traffic with cellphones
UC Berkeley has been working on using cellphones to track traffic for some time now, first under the the decidedly less expansive Mobile Century project, and now under its new Mobile Millennium project, which has the backing of Nokia, NAVTEQ, and others. It actually first kicked off earlier this year, but it looks like it's now about to take another big step forward, with the researchers set to open things up to the general public -- or the general public in Northern California, at least. The idea here is to collect data from folks with GPS-equipped cellphones and combine it with existing traffic data, and then in turn make that information accessible via cellphone to let you plan out the speediest route. According to the researchers, the software will work on both Nokia and non-Nokia phones, but it seems that they've only tested it on the E71 and N95 so far (you can also view real-time traffic data on your computer). More details will apparently be announced when this new stage of the project officially gets underway on November 10th, but those interested in taking part can already register by hitting up the read link below.[Thanks, Eric M]Update: In case you're wondering about the potential privacy concerns here, UC Berkeley has said that it has built privacy safeguards into the system from the beginning to ensure that no data can be tied to a particular phone, and it also notes that users can control the service themselves and, of course, shut it off anytime they don't want traffic data to be transmitted.
Researchers find ways to squeeze light into spaces never thought possible
It looks like a team of UC Berkeley researchers led by mechanical engineering professor Xiang Zhang (pictured) have found a way to squeeze light into tighter spaces than ever though possible, which they say could lead to breakthroughs in the fields of optical communications, miniature lasers, and optical computers. The key to this new technique, it seems, is the use of a "hybrid" optical fiber consisting of a very thin semiconductor wire placed close to a smooth sheet of silver, which effectively acts as a capacitor that traps the light waves in the gap between the wire and the metal sheet and lets it slip though spaces as tiny as 10 nanometers (or more than 100 times thinner than current optical fibers). That's apparently as opposed to previous attempts that relied on surface plasmonics, in which light binds to electrons and allows it to travel along the surface of metal, which only proved effective over short distances. While all of this is still in the theoretical stage, the researchers seem to think they're on to something big, with research associate Rupert Olten saying that this new development "means we can potentially do some things we have never done before.
Researchers tout 20 million processor-strong supercomputer to study climate change
It looks like a group of researchers at UC Berkeley have come up with a rather unique way of solving the problem of getting supercomputers past the processing power / energy consumption barrier, with them now touting the possibility of using millions of low-power embedded microprocessors instead of conventional server processors. That tantalizing prospect has apparently already lead to a deal with Tensilica Inc, which will provide the Berkeley researchers with some of its Xtensa LX extensible processor cores to use as the "basic building blocks in a massively parallel system design." Ultimately, the researchers say they could one day build a massive supercomputer consisting of 20 million embedded microprocessors at a cost of $75 million, which they say would have a power consumption of less than 4 megawatts and a peak performance of 200 petaflops. That, they say, would be enough for it to create climate models at 1-kilometer scale or, as the researchers put it, more than 1,000 times more powerful than anything available today.[Via TG Daily]
Berkeley researchers develop world's smallest radio
Move over, UC Irvine: your colleagues across the state at UC Berkeley have just one-upped your nano-scale radio by not only using nanotechnology for the demodulator, but actually "stuffing" all the components into a single carbon nanotube. By utilizing mechanical -- rather than electrical -- vibrations of a nanotube protruding from an electrode, the team from Berkeley and the Lawrence Berkeley National Laboratory were able to mimic the tuner, antenna, amplifier, and demodulator which compose traditional radios. Their prototype nano-radio, 10,000 times thinner than a human hair, has already been used to broadcast and receive such classic tunes as Good Vibrations by the Beach Boys and Eric Clapton's Layla; a video of this latter transmission, whose poor quality will make you long for the relative clarity of AM radio, is available after the break...[Via San Francisco Chronicle, image and video courtesy of Zettl Research Group, Lawrence Berkeley National Laboratory and University of California at Berkeley]
$10 cellphone may be coming in two years
With Motorola not making a heckuva lot of profit these days, can it and the other handset makers really get a $10 handset to market? Some at UC Berkeley's Center for Information Technology Research in the Interest of Society (CITRIS) say that it may be possible to get a $10 cellphone -- likely targeted at emerging markets -- on the streets. Still, can it be done from a cost and logistics perspective? CITRIS in California (no pun intended) believes such a handset could be on the global market within a few years if any Taiwanese contract manufacturers care to sign up to the vision. With Taiwan's Quanta being the top maker of the $100 OLPC laptop computer system that is shipping, perhaps a $10 cellphone can, in fact, be done. After all, the MOTOFONE ain't that far away.
UC Berkeley on iTunes
Apple unleashed iTunes U to an unsuspecting world a few months ago with some success. You can now add UC Berkeley to the list of institutions that are using iTunes to deliver course podcasts to their students (and anyone else that visits itunes.berkeley.edu).Thanks, Ben.
UC Berkeley's disease-detecting E-Nose
The last time we checked in on electronic nose technology, hospitals were using the still-boutique devices for very specialized institutional work such as monitoring nasty bacteria outbreaks. Recent breakthroughs by a company called Nanomix, however, could make E-Noses a standard tool in every patient examination room, with UC Berkeley researchers using the company's tech to design cheap devices that can "sniff out" disease-laden molecules in samples a person's breath. Nanomix's "Sensation" detection platform uses multiple, configurable carbon nanotube-based sensors to instantly provide a reading from a puff or air, although the exact diseases that the battery-powered devices will be programmed to detect have not been announced. We do know that the first application of this tech will probably be for carbon dioxide detection, allowing emergency personnel to immediately determine the efficacy of breathing tubes used to stabilize patients on board an ambulance.
